yeah, the thing I saw apparently mentioned stuff like widening the nostrils of smooshy faced dogs to make it easier for them to breathe, so that I'm okay with

I don't consider this plastic surgery, this is something to help improve an animals quality of life. No surgery should be done lightly, but if it's to help an animal breath easier or see, this is done for health reasons, not cosmetic, and that's what's important.

The cat bath thing exists in Japan. I've seen them before :/ Pets in Japan are treated like children bc of the low birth rate and high cost of living or something. Treating these animals like humans causes way more than enough behavioral problems and is completely biserk and unnecessary :(
My cousin works at a vet and had one of her cat's ears tattooed with a pic of a bunny. She claims it was for id but she has like a hundred other cats without tattoos. It was a gimmick and now the cat looks foolish.
I agree, the website seems to have a cult following but it's all a joke. Some of the pics are real, some are photoshopped. Brings to mind, there is a doggy spa here in my city who dies fur and paints nails. They were exhibiting a chihuahua and a standard poodle at the Pet Expo last year. I guess people think it's cute. I thought it looked ridiculous. If it doesn't benefit the purpose of the animal then you don't need it. A scarf will suffice, and is way cheaper!!! lol On the other hand, if the dog is not harmed or annoyed or uncomfortable or inconvenienced in any way and the human has a twisted mind and disposable cash, then fine. Do it. But you'll be getting harsh words from people :P

haven't looked at this, but, tattooing of animals is sometimes done for identification purposes. I think with some race horses.

They tatoo the insideof thoroughbreds upper lip for identification and to keep track of the horses racing career. I heard of a women that had eyeliner tatooed on her horse because it had very pale blue eyes. Kinda like ball players put that black stuff under their eyes to keep the sun out. But they do make animal safe hair dye. I knew a woman that dyed her horses tail black just cuz she thought it was "pretty". I just laughed at her.